on their own essential meaning. >> reporter: president obama will be in new york today and tomorrow for the general assembly. last night on "60 minutes," mr. obama said his biggest disappointment is he hasn't changed the climate in washington. >> i'm hoping after the smoke is clear, the spirit of cooperation comes more to the front. >> president also shot back after the criticism that he's not coming up against iran. >> tahman bradley in washington. thank you. >>> and looking way ahead to the 2016 election, there's growing speculation that hillary clinton may want to run again. even her own husband is not sure about his wife's intention, but he is sure that she would make a great candidate. >> i just don't know. she's an extraordinarily able person. i've never met anybody that i thought was a better public servant. but i have no earthly idea what she'll decide to do. >> after four years of being secretary of state, clinton says his wife may want to take some time off and read a book or two. >>> president obama and about 120 heads of state gather in new york for the general assembly.